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Finding the Fourth Proportional to 250,466, 345,678.51 and 155,003.45

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Solution

The fourth proportional to 250,466, 345,678.51 and 155,003.45 is: 213,926.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,466 : 345,678.51 = 155,003.45 : x
  2. Step 2: Convert to fraction form
    250,466/345,678.51 = 155,003.45/x
  3. Step 3: Cross multiply
    250,466x = 345,678.51 × 155,003.45
  4. Step 4: Simplify right side
    250,466x = 53,581,361,640.86
  5. Step 5: Solve for x
    x = 53,581,361,640.86/250,466
  6. Step 6: Final answer
    x = 213,926.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.